Topics Mathematic models in GPS Basic theory of contributions that need be to included for millimeter level global positioning Use of differenced data Combinations of observables for different purposes 12540Lec01 Topics Methods of processing GPS data Available software Available data(International GPS service, IGS; University consortium(Unavco) Cycle slip detection and repair Relationship between satellite based and conventional geodetic systems(revisit since this is an important topic) 02/5/03 2540Lec0102/05/03 12.540 Lec 01 11 Topics • Mathematic models in GPS positioning purposes 02/05/03 12.540 Lec 01 12 Topics • (Unavco) – Basic theory of contributions that need be to included for millimeter level global – Use of differenced data – Combinations of observables for different Methods of processing GPS data – Available software – Available data (International GPS service, IGS; University consortium – Cycle slip detection and repair – Relationship between satellite based and conventional geodetic systems (revisit since this is an important topic) 6